package org.jianghu.utils;

import android.content.Context;
import android.content.SharedPreferences;
import android.util.Base64;

import org.jianghu.base.model.User;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OptionalDataException;

/**
 * Created by Administrator on 2016/12/19.
 */

public class SharedPreferencesUtil {

    //存储的sharedpreferences文件名
    private static final String FILE_NAME = "jianghu_sp";

    /**
     * 保存数据到文件
     *
     * @param context
     * @param key
     * @param data
     */
    public static void saveData(Context context, String key, Object data) {

        String type = data.getClass().getSimpleName();
        SharedPreferences sharedPreferences = context
                .getSharedPreferences(FILE_NAME, Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = sharedPreferences.edit();

        if ("Integer".equals(type)) {
            editor.putInt(key, (Integer) data);
        } else if ("Boolean".equals(type)) {
            editor.putBoolean(key, (Boolean) data);
        } else if ("String".equals(type)) {
            editor.putString(key, (String) data);
        } else if ("Float".equals(type)) {
            editor.putFloat(key, (Float) data);
        } else if ("Long".equals(type)) {
            editor.putLong(key, (Long) data);
        }

        editor.commit();
    }

    /**
     * 从文件中读取数据
     *
     * @param context
     * @param key
     * @param defValue
     * @return
     */
    public static Object getData(Context context, String key, Object defValue) {

        String type = defValue.getClass().getSimpleName();
        SharedPreferences sharedPreferences = context.getSharedPreferences
                (FILE_NAME, Context.MODE_PRIVATE);

        //defValue为为默认值，如果当前获取不到数据就返回它
        if ("Integer".equals(type)) {
            return sharedPreferences.getInt(key, (Integer) defValue);
        } else if ("Boolean".equals(type)) {
            return sharedPreferences.getBoolean(key, (Boolean) defValue);
        } else if ("String".equals(type)) {
            return sharedPreferences.getString(key, (String) defValue);
        } else if ("Float".equals(type)) {
            return sharedPreferences.getFloat(key, (Float) defValue);
        } else if ("Long".equals(type)) {
            return sharedPreferences.getLong(key, (Long) defValue);
        }

        return null;
    }

    /**
     * 设置User信息到SharedPref
     *
     * @param user
     */
    public static void setUser(Context context, User user) {
        try {
            ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
            ObjectOutputStream objectOutputStream = new ObjectOutputStream(
                    byteArrayOutputStream);
            objectOutputStream.writeObject(user);
            String userString = new String(Base64.encode(
                    byteArrayOutputStream.toByteArray(), Base64.DEFAULT));
            saveData(context, JH.USER_KEY, userString);
            objectOutputStream.close();

        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 保存User信息到SharedPref
     *
     * @return
     */
    public static User getUser(Context context) {
        User user = null;
        try {
            String userString = (String) getData(context, JH.USER_KEY, "");
            byte[] userBytes = Base64.decode(userString.getBytes(),
                    Base64.DEFAULT);
            ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(
                    userBytes);
            ObjectInputStream objectInputStream = new ObjectInputStream(byteArrayInputStream);
            user = (User) objectInputStream.readObject();
            objectInputStream.close();
        } catch (OptionalDataException e) {
            e.printStackTrace();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
//			e.printStackTrace();
        }
        return user;
    }

}
